| | | | | | |

Core i7-6600U vs Pentium 4405U


Description
Both models i7-6600U and 4405U are based on Skylake architecture.

Sky Lake is also known as 6th generation Core. Include Thunderbolt 3.0, SATA Express and Iris Pro graphics with DirectX 12. It uses LGA 1151 socket for mainstream models and LGA 2066 for X-Series. Sky Lake comes with AVX2 support in all mainstreams CPUs and AVX-512 in some high end models.

Using the multithread performance as a reference, the i7-6600U gets a score of 48.2 k points while the 4405U gets 51.1 k points.

Summarizing, the 4405U is 1.1 times faster than the i7-6600U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
406e3
406e3
Core
Skylake-U
Skylake-U
Architecture
Base frecuency
2.6 GHz
2.1 GHz
Boost frecuency
3.4 GHz
2.1 GHz
Socket
BGA1356
BGA 1356
Cores/Threads
2/4
2/4
TDP
15 W
15 W
Cache L1 (d+i)
2x32+2x32 kB
2x32+2x32 kB
Cache L2
2x256 kB
2x256 kB
Cache L3
4096 kB
2048 kB
Date
September 2015
Mean monothread perf.
39.73k points
23.33k points
Mean multithread perf.
79.22k points
51.1k points

SSE3 optimized benchmark
The benchmark in mode I (SSE) is optimized for the use of SIMD instructions with 128 bits register and the SSE set up to version 3. Nearly every modern CPU has support for this mode.
Monothread
i7-6600U
4405U
Test#1 (Integers)
6.76k
7.45k (x1.1)
Test#2 (FP)
9.58k
10.51k (x1.1)
Test#3 (Generic, ZIP)
2.46k
2.78k (x1.13)
Test#1 (Memory)
4.18k
2.59k (x0.62)
TOTAL
22.99k
23.33k (x1.01)

Multithread

i7-6600U

4405U
Test#1 (Integers)
14.37k
16.1k (x1.12)
Test#2 (FP)
23.79k
25.44k (x1.07)
Test#3 (Generic, ZIP)
5.71k
6.99k (x1.22)
Test#1 (Memory)
4.29k
2.58k (x0.6)
TOTAL
48.16k
51.1k (x1.06)

Performance/W
i7-6600U
4405U
Test#1 (Integers)
958 points/W
1073 points/W
Test#2 (FP)
1586 points/W
1696 points/W
Test#3 (Generic, ZIP)
380 points/W
466 points/W
Test#1 (Memory)
286 points/W
172 points/W
TOTAL
3211 points/W
3407 points/W

Performance/GHz
i7-6600U
4405U
Test#1 (Integers)
1989 points/GHz
3547 points/GHz
Test#2 (FP)
2818 points/GHz
5007 points/GHz
Test#3 (Generic, ZIP)
724 points/GHz
1324 points/GHz
Test#1 (Memory)
1229 points/GHz
1232 points/GHz
TOTAL
6761 points/GHz
11109 points/GHz

Monothread performance graph
Monothread performance graphics gives the performance vs time. They are useful to measure the time it takes to the CPU to reach the maximum performance.

Usually, CPU's performance will be steady during these tests but if it has a slow frequency strategy, the first samples will show a lower score.


Test#1 (Integers) [points vs time]

grafica bm.hardlimit.com


Test#2 (FP) [points vs time]

grafica bm.hardlimit.com


Test#3 (Generic, ZIP) [points vs time]

grafica bm.hardlimit.com


Test#1 (Memory) [points vs time]

grafica bm.hardlimit.com

Multithread performance graph
Multithread graphs measure the performance against a heavy load during certain time.

If CPU's TDP doesn't limit the frequency and the machine is properly cooled, performance should remain steady vs time. Otherwise, the performance score will oscillate or decrease over time.


Test#1 (Integers) [points vs time]

grafica bm.hardlimit.com


Test#2 (FP) [points vs time]

grafica bm.hardlimit.com


Test#3 (Generic, ZIP) [points vs time]

grafica bm.hardlimit.com


Test#1 (Memory) [points vs time]

grafica bm.hardlimit.com

Hardlimit Benchmark Central - Ver. 3.11.4